Bulgarian police widen suicide bombing probe

From Atika Shubert, CNN

Updated 11:14 AM ET, Mon July 23, 2012

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – A truck carries the bus damaged by the suicide bomb blast which targeted a group of Israeli tourists in Bulgaria, on Thursday. The suicide bomber was dressed as a tourist carrying fake U.S. ID. Investigators are still trying to find out his identity.

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – The bodies of Israeli victims of the Bulgaria bus bomb last week return home.

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – Israeli Prime Minister Benjamin Netanyahu delivers a statement following the Bulgaria bus bombing. Netanyahu said: "Yesterday's attack in Bulgaria was perpetrated by Hezbollah, Iran's leading terrorist proxy." Israel's U.S. Embassy said Wednesday that it had no proof that Iran was the instigator of the attack.

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – A member of the Israeli rescue and recovery squad searches for evidence at the airport in Burgas, the site of a suicide blast targeting Israelis on July 19.

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – Smoke rises over Bulgaria's Burgas Airport after an explosion on a bus carrying Israeli tourists on Wednesday, July 18. At least six are dead.

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Photos:Photos: Bus explosion in Bulgaria

Bus explosion in Bulgaria – A police officer is seen near destroyed buses after the explosion.

Bulgarian authorities still have not been able to identify the bomber, who was seen on airport security videos about an hour before the attack. They have taken fingerprints and DNA samples and given that information to their counterparts in Israel, the United States and Interpol.

The owner and an employee of the Afrodita Car Rental Agency told CNN a suspicious man wanted to rent a car the Sunday before the attack and tried to use the Michigan driver's license later found at the scene of the attack.

When the owner said he wanted to photocopy the license, the man grew nervous and refused to have it copied. At that point, the owner said he refused to rent the man a car and the man walked out.

The car rental owner described the man as having short dark hair and speaking English with an accent. The woman who conducted the forensic reconstruction of the suspected bomber's face and body, told Bulgarian TV the man had a white face, light eyes and thick dark hair.